Electromagnetic shielding gasket

Abstract

The present invention relates to gasket for electromagnetic shielding. The gasket is formed of an elastomeric core and one or more bands of electrically conductive textile material which surrounds and is partially embedded in the core.

What I claim is: 
     
       1. An electromagnetic shielding gasket consisting of a core of an elastomeric material coated by at least one layer of an electrically conductive textile material, such that the layer of electrically conductive textile material is at least partially incorporated into the elastomeric material of the core. 
     
     
       2. The gasket according to claim 1, wherein the core is selected from the group consisting of solid and foamed elastomeric material, and the layer of textile material is formed of bands, the fibers of which are interlocked. 
     
     
       3. An electromagnetic shielding gasket consisting of a core of an elastomeric material having at least one layer of electrically conductive textile material wound about and partially incorporated into the core. 
     
     
       4. The gasket of claim 3 wherein the core is an elastomeric material selected from the group consisting of polychloroprene, silicone and fluoro-silicone rubbers, polyurethane, fluorinated elastomers, epichlorohydrin, thermoplastics and thermostable elastomers and combinations thereof; the textile material is formed of a material selected from the group consisting of nickel, stainless steel, copper, aluminum and coated steel. 
     
     
       5. An electromagnetic shielding gasket consisting of a core of elastomeric material, and an outer covering of electrically conductive bands wherein a portion of the electrically conductive bands and the elastomeric material interpenetrate each other so as to form an integral, flexible gasket. 
     
     
       6. The gasket of claim 5 wherein the core is an elastomeric material selected from the group consisting of polychloroprene, silicone and fluoro-silicone rubbers, polyurethane, fluorinated elastomers, epichlorohydrin, thermoplastics and thermostable elastomers and combinations thereof; the core is selected from the group consisting of solid and foamed elastomeric materials; the electrically conductive bands are formed of threads or fibers which have been interlocked by a means selected from the group consisting of weaving, knitting, braiding and bonding; and the fibers are selected from the group consisting of nickel, stainless steel, copper, aluminum, and coated steel. 
     
     
       7. An electromagnetic shielding gasket made by the process consisting of forming a core of an elastomeric material, coating the core with at least one electrically conductive band of a conductive textile material so as to surround the core with the band and form a coated core and calibrating the coated core by passing it through at least one die which also causes the band of textile material to be partially incorporated into the elastomeric material of the core. 
     
     
       8. The gasket made by the process of claim 7 wherein the core is formed of an elastomeric material selected from the group consisting of polychloroprene, silicone and fluoro-silicone rubbers, polyurethane, fluorinated elastomers, epichlorohydrin, thermoplastics and thermostable elastomers and combinations thereof; the textile material is formed by weaving and comprised of a conductive material selected from the group consisting of nickel, stainless steel, copper, aluminum, and coated steel.